diff --git a/pkgs/development/python-modules/db-dtypes/default.nix b/pkgs/development/python-modules/db-dtypes/default.nix
index c2bb9a49595a..4393f725aafe 100644
--- a/pkgs/development/python-modules/db-dtypes/default.nix
+++ b/pkgs/development/python-modules/db-dtypes/default.nix
@@ -45,6 +45,10 @@ buildPythonPackage (finalAttrs: {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
+  pytestFlags = [
+    "-Wignore::DeprecationWarning"
+  ];
+
   pythonImportsCheck = [ "db_dtypes" ];
 
   meta = {